Elena Rybakina said it was so far, so good with her left heel injury after she eased into the second round of the US Open with a straight-sets victory over US teen Thea Frodin. World No. Key points and original sources are listed below.

• Elena Rybakina said it was so far, so good with her left heel injury after she eased into the second round of the US Open with a straight-sets victory over US teen Thea Frodin. The second-ranked Kazakh has her sights not only on a third Grand Slam but also the...S1

• World No. 2 Rybakina and No. 4 Gauff are two of the three players, along with No. 3 Jessica Pegula, who have a chance to supplant Aryna Sabalenka atop the world rankings.S2